Double Star Calculator - Orbit

Orbital Elements for I298
WDS: I298 WDS ID/Discoverer
P: 500.000 Orbital period (years)
a: 0.821 Semi-major axis (arcseconds)
i: 113.1 Inclination (degrees)
Ω: 16.7 Longitude of ascending node (degrees)
T: 1812.950 Epoch of periastron passage (year)
e: 0.2 Eccentricity
ω: 89.6 Longitude of periastron (degrees)
Start-Year: 1775.0 Year
End-Year: 2275.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I298
Position: 133232.77-691354.0 Epoch-2000 right ascension and declination
WDS-ID: 13325-6914 WDS designation
Discoverer Code: I298 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 117445 HD catalog number
Hipparcos number: 66057 Hipparcos catalog number
V1: 7.36 Magnitude of the primary
V2: 8.54 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2023e Reference

Double Star Orbit for I298



WDS 6th Orbit including measures of I298

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of I298
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.475   147.00
--------------------------
1775.00    0.493   352.47
1776.00    0.485   351.69
1777.00    0.477   350.88
1778.00    0.469   350.05
1779.00    0.461   349.18
1780.00    0.452   348.29
1781.00    0.444   347.36
1782.00    0.436   346.40
1783.00    0.428   345.40
1784.00    0.420   344.36
1785.00    0.412   343.28
1786.00    0.403   342.16
1787.00    0.395   340.99
1788.00    0.387   339.77
1789.00    0.379   338.50
1790.00    0.371   337.17
1791.00    0.364   335.79
1792.00    0.356   334.35
1793.00    0.349   332.85
1794.00    0.341   331.28
1795.00    0.334   329.64
1796.00    0.327   327.93
1797.00    0.320   326.15
1798.00    0.313   324.29
1799.00    0.307   322.35
1800.00    0.301   320.33
1801.00    0.295   318.23
1802.00    0.290   316.05
1803.00    0.285   313.79
1804.00    0.280   311.44
1805.00    0.276   309.02
1806.00    0.272   306.53
1807.00    0.268   303.97
1808.00    0.265   301.34
1809.00    0.263   298.66
1810.00    0.261   295.94
1811.00    0.259   293.17
1812.00    0.258   290.38
1813.00    0.258   287.58
1814.00    0.258   284.77
1815.00    0.258   281.97
1816.00    0.260   279.19
1817.00    0.261   276.44
1818.00    0.264   273.73
1819.00    0.266   271.07
1820.00    0.269   268.47
1821.00    0.273   265.93
1822.00    0.277   263.47
1823.00    0.282   261.08
1824.00    0.287   258.77
1825.00    0.292   256.54
1826.00    0.297   254.39
1827.00    0.303   252.32
1828.00    0.310   250.34
1829.00    0.316   248.43
1830.00    0.323   246.60
1831.00    0.330   244.85
1832.00    0.337   243.16
1833.00    0.344   241.55
1834.00    0.351   240.01
1835.00    0.359   238.53
1836.00    0.367   237.12
1837.00    0.375   235.76
1838.00    0.383   234.46
1839.00    0.390   233.21
1840.00    0.399   232.01
1841.00    0.407   230.86
1842.00    0.415   229.75
1843.00    0.423   228.69
1844.00    0.431   227.66
1845.00    0.439   226.68
1846.00    0.448   225.73
1847.00    0.456   224.82
1848.00    0.464   223.93
1849.00    0.472   223.08
1850.00    0.480   222.26
1851.00    0.488   221.47
1852.00    0.496   220.70
1853.00    0.504   219.95
1854.00    0.512   219.23
1855.00    0.520   218.53
1856.00    0.528   217.85
1857.00    0.536   217.19
1858.00    0.544   216.55
1859.00    0.551   215.93
1860.00    0.559   215.32
1861.00    0.566   214.73
1862.00    0.574   214.16
1863.00    0.581   213.60
1864.00    0.588   213.05
1865.00    0.595   212.52
1866.00    0.602   212.00
1867.00    0.609   211.49
1868.00    0.616   210.99
1869.00    0.622   210.50
1870.00    0.629   210.03
1871.00    0.636   209.56
1872.00    0.642   209.10
1873.00    0.648   208.66
1874.00    0.654   208.22
1875.00    0.660   207.78
1876.00    0.666   207.36
1877.00    0.672   206.94
1878.00    0.678   206.53
1879.00    0.683   206.13
1880.00    0.689   205.74
1881.00    0.694   205.35
1882.00    0.699   204.96
1883.00    0.704   204.58
1884.00    0.709   204.21
1885.00    0.714   203.84
1886.00    0.719   203.48
1887.00    0.723   203.12
1888.00    0.728   202.76
1889.00    0.732   202.41
1890.00    0.737   202.07
1891.00    0.741   201.73
1892.00    0.745   201.39
1893.00    0.748   201.05
1894.00    0.752   200.72
1895.00    0.756   200.39
1896.00    0.759   200.07
1897.00    0.763   199.75
1898.00    0.766   199.43
1899.00    0.769   199.11
1900.00    0.772   198.80
1901.00    0.775   198.48
1902.00    0.778   198.18
1903.00    0.780   197.87
1904.00    0.783   197.56
1905.00    0.785   197.26
1906.00    0.787   196.96
1907.00    0.790   196.66
1908.00    0.792   196.36
1909.00    0.794   196.06
1910.00    0.795   195.77
1911.00    0.797   195.47
1912.00    0.799   195.18
1913.00    0.800   194.89
1914.00    0.801   194.60
1915.00    0.803   194.31
1916.00    0.804   194.02
1917.00    0.805   193.73
1918.00    0.806   193.44
1919.00    0.806   193.15
1920.00    0.807   192.87
1921.00    0.807   192.58
1922.00    0.808   192.29
1923.00    0.808   192.01
1924.00    0.808   191.72
1925.00    0.809   191.44
1926.00    0.809   191.15
1927.00    0.809   190.87
1928.00    0.808   190.58
1929.00    0.808   190.30
1930.00    0.808   190.01
1931.00    0.807   189.72
1932.00    0.807   189.44
1933.00    0.806   189.15
1934.00    0.805   188.86
1935.00    0.804   188.57
1936.00    0.803   188.29
1937.00    0.802   188.00
1938.00    0.801   187.71
1939.00    0.800   187.41
1940.00    0.798   187.12
1941.00    0.797   186.83
1942.00    0.795   186.53
1943.00    0.794   186.24
1944.00    0.792   185.94
1945.00    0.790   185.64
1946.00    0.788   185.34
1947.00    0.786   185.04
1948.00    0.784   184.74
1949.00    0.782   184.44
1950.00    0.780   184.13
1951.00    0.778   183.82
1952.00    0.775   183.51
1953.00    0.773   183.20
1954.00    0.771   182.89
1955.00    0.768   182.58
1956.00    0.765   182.26
1957.00    0.763   181.94
1958.00    0.760   181.62
1959.00    0.757   181.29
1960.00    0.754   180.96
1961.00    0.751   180.64
1962.00    0.748   180.30
1963.00    0.745   179.97
1964.00    0.741   179.63
1965.00    0.738   179.29
1966.00    0.735   178.95
1967.00    0.731   178.60
1968.00    0.728   178.25
1969.00    0.725   177.89
1970.00    0.721   177.54
1971.00    0.717   177.18
1972.00    0.714   176.81
1973.00    0.710   176.44
1974.00    0.706   176.07
1975.00    0.702   175.70
1976.00    0.698   175.32
1977.00    0.695   174.93
1978.00    0.691   174.54
1979.00    0.687   174.15
1980.00    0.682   173.75
1981.00    0.678   173.35
1982.00    0.674   172.94
1983.00    0.670   172.53
1984.00    0.666   172.11
1985.00    0.662   171.68
1986.00    0.657   171.26
1987.00    0.653   170.82
1988.00    0.649   170.38
1989.00    0.644   169.93
1990.00    0.640   169.48
1991.00    0.635   169.02
1992.00    0.631   168.56
1993.00    0.626   168.09
1994.00    0.622   167.61
1995.00    0.617   167.12
1996.00    0.613   166.63
1997.00    0.608   166.13
1998.00    0.604   165.62
1999.00    0.599   165.10
2000.00    0.594   164.58
2001.00    0.590   164.05
2002.00    0.585   163.51
2003.00    0.581   162.96
2004.00    0.576   162.40
2005.00    0.571   161.83
2006.00    0.567   161.26
2007.00    0.562   160.67
2008.00    0.557   160.07
2009.00    0.553   159.47
2010.00    0.548   158.85
2011.00    0.543   158.23
2012.00    0.539   157.59
2013.00    0.534   156.94
2014.00    0.530   156.28
2015.00    0.525   155.61
2016.00    0.521   154.93
2017.00    0.516   154.24
2018.00    0.512   153.53
2019.00    0.507   152.81
2020.00    0.503   152.08
2021.00    0.498   151.33
2022.00    0.494   150.58
2023.00    0.490   149.81
2024.00    0.486   149.02
2025.00    0.481   148.22
2026.00    0.477   147.41
2027.00    0.473   146.58
2028.00    0.469   145.74
2029.00    0.465   144.89
2030.00    0.461   144.02
2031.00    0.457   143.13
2032.00    0.453   142.23
2033.00    0.450   141.32
2034.00    0.446   140.39
2035.00    0.442   139.44
2036.00    0.439   138.48
2037.00    0.435   137.50
2038.00    0.432   136.51
2039.00    0.429   135.51
2040.00    0.426   134.48
2041.00    0.423   133.45
2042.00    0.420   132.40
2043.00    0.417   131.33
2044.00    0.414   130.25
2045.00    0.412   129.16
2046.00    0.409   128.05
2047.00    0.407   126.93
2048.00    0.404   125.79
2049.00    0.402   124.65
2050.00    0.400   123.49
2051.00    0.398   122.32
2052.00    0.397   121.14
2053.00    0.395   119.95
2054.00    0.394   118.75
2055.00    0.392   117.54
2056.00    0.391   116.32
2057.00    0.390   115.10
2058.00    0.389   113.87
2059.00    0.388   112.63
2060.00    0.388   111.39
2061.00    0.387   110.15
2062.00    0.387   108.90
2063.00    0.387   107.66
2064.00    0.387   106.41
2065.00    0.387   105.16
2066.00    0.387   103.91
2067.00    0.387   102.67
2068.00    0.388   101.43
2069.00    0.389   100.19
2070.00    0.389    98.95
2071.00    0.390    97.73
2072.00    0.391    96.51
2073.00    0.393    95.29
2074.00    0.394    94.09
2075.00    0.396    92.89
2076.00    0.397    91.70
2077.00    0.399    90.53
2078.00    0.401    89.36
2079.00    0.403    88.21
2080.00    0.405    87.07
2081.00    0.408    85.94
2082.00    0.410    84.82
2083.00    0.413    83.72
2084.00    0.415    82.63
2085.00    0.418    81.56
2086.00    0.421    80.50
2087.00    0.424    79.45
2088.00    0.427    78.42
2089.00    0.430    77.40
2090.00    0.433    76.40
2091.00    0.437    75.42
2092.00    0.440    74.45
2093.00    0.444    73.49
2094.00    0.447    72.55
2095.00    0.451    71.63
2096.00    0.455    70.72
2097.00    0.459    69.82
2098.00    0.463    68.95
2099.00    0.466    68.08
2100.00    0.471    67.23
2101.00    0.475    66.40
2102.00    0.479    65.57
2103.00    0.483    64.77
2104.00    0.487    63.97
2105.00    0.491    63.19
2106.00    0.496    62.43
2107.00    0.500    61.68
2108.00    0.504    60.94
2109.00    0.509    60.21
2110.00    0.513    59.50
2111.00    0.518    58.79
2112.00    0.522    58.10
2113.00    0.527    57.43
2114.00    0.531    56.76
2115.00    0.536    56.10
2116.00    0.541    55.46
2117.00    0.545    54.83
2118.00    0.550    54.21
2119.00    0.554    53.59
2120.00    0.559    52.99
2121.00    0.564    52.40
2122.00    0.568    51.82
2123.00    0.573    51.24
2124.00    0.578    50.68
2125.00    0.582    50.13
2126.00    0.587    49.58
2127.00    0.591    49.04
2128.00    0.596    48.51
2129.00    0.601    47.99
2130.00    0.605    47.48
2131.00    0.610    46.97
2132.00    0.614    46.48
2133.00    0.619    45.98
2134.00    0.623    45.50
2135.00    0.628    45.02
2136.00    0.632    44.55
2137.00    0.637    44.09
2138.00    0.641    43.63
2139.00    0.646    43.18
2140.00    0.650    42.74
2141.00    0.654    42.30
2142.00    0.659    41.87
2143.00    0.663    41.44
2144.00    0.667    41.02
2145.00    0.671    40.60
2146.00    0.675    40.19
2147.00    0.680    39.78
2148.00    0.684    39.38
2149.00    0.688    38.99
2150.00    0.692    38.59
2151.00    0.696    38.21
2152.00    0.700    37.82
2153.00    0.703    37.44
2154.00    0.707    37.07
2155.00    0.711    36.70
2156.00    0.715    36.33
2157.00    0.718    35.97
2158.00    0.722    35.61
2159.00    0.725    35.25
2160.00    0.729    34.90
2161.00    0.732    34.55
2162.00    0.735    34.20
2163.00    0.739    33.86
2164.00    0.742    33.52
2165.00    0.745    33.18
2166.00    0.748    32.85
2167.00    0.751    32.51
2168.00    0.754    32.19
2169.00    0.757    31.86
2170.00    0.760    31.53
2171.00    0.763    31.21
2172.00    0.765    30.89
2173.00    0.768    30.58
2174.00    0.770    30.26
2175.00    0.773    29.95
2176.00    0.775    29.64
2177.00    0.778    29.33
2178.00    0.780    29.02
2179.00    0.782    28.71
2180.00    0.784    28.41
2181.00    0.786    28.11
2182.00    0.788    27.80
2183.00    0.790    27.50
2184.00    0.791    27.21
2185.00    0.793    26.91
2186.00    0.795    26.61
2187.00    0.796    26.32
2188.00    0.797    26.02
2189.00    0.799    25.73
2190.00    0.800    25.44
2191.00    0.801    25.15
2192.00    0.802    24.86
2193.00    0.803    24.57
2194.00    0.804    24.28
2195.00    0.804    23.99
2196.00    0.805    23.70
2197.00    0.805    23.41
2198.00    0.806    23.13
2199.00    0.806    22.84
2200.00    0.806    22.55
2201.00    0.806    22.26
2202.00    0.806    21.98
2203.00    0.806    21.69
2204.00    0.806    21.40
2205.00    0.806    21.12
2206.00    0.805    20.83
2207.00    0.805    20.54
2208.00    0.804    20.25
2209.00    0.803    19.96
2210.00    0.802    19.67
2211.00    0.801    19.38
2212.00    0.800    19.09
2213.00    0.799    18.80
2214.00    0.798    18.51
2215.00    0.796    18.21
2216.00    0.795    17.92
2217.00    0.793    17.62
2218.00    0.791    17.33
2219.00    0.789    17.03
2220.00    0.787    16.73
2221.00    0.785    16.43
2222.00    0.783    16.12
2223.00    0.780    15.82
2224.00    0.778    15.51
2225.00    0.775    15.20
2226.00    0.773    14.89
2227.00    0.770    14.57
2228.00    0.767    14.26
2229.00    0.763    13.94
2230.00    0.760    13.62
2231.00    0.757    13.29
2232.00    0.753    12.97
2233.00    0.750    12.64
2234.00    0.746    12.30
2235.00    0.742    11.97
2236.00    0.738    11.63
2237.00    0.734    11.28
2238.00    0.730    10.93
2239.00    0.725    10.58
2240.00    0.721    10.22
2241.00    0.716     9.86
2242.00    0.712     9.50
2243.00    0.707     9.13
2244.00    0.702     8.75
2245.00    0.697     8.37
2246.00    0.691     7.98
2247.00    0.686     7.59
2248.00    0.681     7.19
2249.00    0.675     6.78
2250.00    0.669     6.37
2251.00    0.663     5.95
2252.00    0.658     5.52
2253.00    0.651     5.09
2254.00    0.645     4.64
2255.00    0.639     4.19
2256.00    0.633     3.73
2257.00    0.626     3.26
2258.00    0.620     2.78
2259.00    0.613     2.28
2260.00    0.606     1.78
2261.00    0.599     1.27
2262.00    0.592     0.74
2263.00    0.585     0.20
2264.00    0.578   359.65
2265.00    0.570   359.09
2266.00    0.563   358.50
2267.00    0.556   357.91
2268.00    0.548   357.30
2269.00    0.540   356.67
2270.00    0.533   356.02
2271.00    0.525   355.35
2272.00    0.517   354.66
2273.00    0.509   353.95
2274.00    0.501   353.22






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.


Acknowledgements
The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 16:57:12



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